阅读短文, 下列问题

Miss Han: You bring(带来) many things to school, Kevin. Can you tell (告诉) me what are on your desk?

Kevin: Yes, I can. There is an eraser,a ruler, three pencils and a pencil box on my desk.

Miss Han: What is in your drawer(抽屉)?

Kevin: In my drawer, there are two books and a notebook.

Miss Han: What is that on the floor?

Kevin: It is my school bag.

Miss Han: Do you bring your lunch box(饭盒) to school?

Kevin: Yes, I do.

Miss Han: Where do you put it?

Kevin: I put it under my desk.

英国冒险家贝尔•格里尔斯主持的电视《荒野求生》，介绍他在沙漠、沼泽、森林、峡谷等极为恶劣的环境下，生吃幼虫、蝎子求生存，躲避毒蛇、鳄鱼脱离险境，最终回到文明社会。这告诉我们（    ）

①坚强的意志能充分激发人的潜能       ②主动迎接挑战可以锻炼人的意志

③磨练意志必须从荒野探险开始           ④挫折也是人生中的宝贵财富

对加下划线字解释全对的一组是(    )